Oil burner



Feb. 3, 1925.

, 1924 2 Sheets-Sheet 1 Filed Feb. 18

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Feb. 3, 1925.

W. L. BAKER OIL- BURNER 2 Sheets-Sheet 2 Filed Feb. 18'

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@wi/Waco Patented Febv 3, 1925.

PATENT OFFICE.

WILLIAM L. BAKER, O F NEW ORLEANS, LOUISIANA.

OIL BURNER.

Application filed February 18, 1924. Serial No. 693,614.

To @ZZ-whom t may comer/n.'

Be it known that I, WILLIAM L. Bamm,

a citizen of the United States, residing at Newy Orleans, in thc parish of Orleans and State of Louisiana, have invented certain new and useful Improvements in Oil Burners; and I do declare the following to be a full, clear, and exact description of the invention, such as will en: bleothers skilled in the art to which it appertains to make and use the saine.

My linvention relates to improvements in oil atomizers and burners and the present disf-losure is directed to a burner which mechanically atomizes the oil under high pressure andv mixes the atomized oil with low pressure air.

' One object of the invention is .to provide an exceptionally simple and inexpensive, yet an efficient means for atomizing the oil and controlling the rate of discharge thereof. In this connection, a further obj ect is to-'provide a spinner actuated by the oil sprayed from the burner and so positioned as to form what` is commonly known a back shot llame, that is the spinner widens the flame if necessary for certain types of fire boxes. l

In the construction herein disclosed, the burner body vis removably carried by a supporting neck which feeds low pressure air thereto and .is formed with an oil Iport detachably coupled to the burner, and a further object of the invention is to associate a novel yform of drip pan wi-th a coupling by means of which the neck is attached to an air supply pipe, said p-an being adapted yto receive all drippings when the burner is disconnected from the neck, for instance. when withdrawing said burner from a heated lire box after aishut down.

Yet anothenobject iS to associate an air controllingl valve in a novel manner with the above-named drip pan 'and coupling, the arrangement being such that the bottom of said pan and said coupling constitute guiding means for the valve.

`With the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, the description being supplemented by the accompanying drawings.

Figure 1 is a side elevation of a burner constructed in accordance with my invention.

Figure 2 is acentral vertical longitudinal sectional view.'

dFigure 3 is a vertical transverse section as indicated by line 3 3 of Fig. 1.

Figure 4 is an enlarged vertical sectional view through the atomizing portion of the burner.

Figures 5 and 6 are transverse sectional Views as indicated by lines 5 5 and 6,-6 of Fig. 4.

Figure 7 is an elevation showing the front end of the ,oil controlling stem and the valve carried by the front end thereof.

VIn the drawings above briefly described, the numeral l designates a cylindrical head carried by the upper end of a tubular, air

supply neck 2, the lower end of this neck" being preferably threaded as indicated at 3, in a central opening 4 formed in the bottom 5 of a drip pan 6. Contacting with the lower side of the bottom 5, I have illustrated a coupling collar 7 which is by prefer-ance provided with lateral ears Sthrough which cap screws or the like 9 pass to secure said ears to said bottom. vA. low pressure air supply pipe 10 is shown-threaded into the coupling 7. In order to control the amount of air passing from the pipe 10 through the neck 2 and into the burner, yet to be deu scribed, I provide a slidable valve plate 11 which is received in a. relatively wide: and shallow channel-way 12 .formed in the upper side of the collar 7 said plate being formed with an opening 13 to register any desired amount with the pipe 10 and the neck 2.

In the preferred form of construction, the neck 2 is provided at its juncture with the head 1, with a boss 14 in which an oil port 15 is provided. said port communicating with a high pressure oil supply pipe 16. The boss is, by preference provided with a rearwardly extending nipple 17 for reception in a. packed socket- 18 in a downward extension 19 formed on a second cylindrical head 20 which is removably received in the head 1. The rear end of this head 2O in the construction shown` is formed with a. central forwardly extending boss 21 into which an oil pipe 22 is threaded, said pipe being in communication with -theport 15 through the-medium of a duct 23, formed in the downward extension 19. This extension is held in engagement with the nipple 17 by any suitable clamping device 24, which may be released at will, so as to yallow the head 20 andvparts carried thereby, to be'bodily withdrawn from the head 1. Attention may here be ldirected to the fact that a portion of the drip pan 6 extends under the nipple 17 so that whenever they clamping device 24 is released and the projection 19 disengaged from said nipple, all oil draining from the oil passages, will be caught in the oil pan from which it may be drained through a sui-table cock 24.

I have shown the rear end of-the head 20, provided with a boss 25 in which a valve stem 26 is threaded, the rear end of said boss preferably having a suitable stuiiing box 27. Upon the front end of the stem 26, I provide a narrow, frusto-conical valve 28 which co-operates with a narrow frusto-conical valve seat 28 formed in the tip 29 of the oil pipe 22, said tip! being preferably threaded on the pipe as shown. To at all times center the valve 28 with respect to the tip 29, I provide the stem 26 with suitable webs30.

A suitable hand wheel or the like 31, is provided on the rear end of the stem 26, and by turning this wheel, it will be seen that the stem will bel adjusted to space the narrow valve 28 any desired distance from t'he narrow seat 28. Thus, oil under high pressure may be discharged through the annular space between said valve and seat, at a high velocity, and will be sprayed from the tip, in the form of a hollow cone, having the well knownl advantages. I make provision for supplying low pressure air-to this sprayed oil, including a sleeve 32 which surrounds and is widely spaced from the tip 29 and the valve 28, the front end of said sleeve being disposed'in rear of the zone of spray, so as to retard the sprayed fuel,in no manner whatsoever. I' have shown the sleeve 32 connected by another sleeve 33 with the front end of the hollow head 20, and this head is formed with an opening 34 by means" of which it is placed in communication with the neck 2, to receive low pressure air therefrom.

In certain types of furnaces, the cone lsprayed from the .space between the valve 28 and seat 28', may be used without any means for widening the zone of spray. For instance, this arrangement may be employed to advantage in the lire boxes of Scotch boilers. In other types of fire boxes, however, it is necessary to produce a back shot dame, that is the flame must be widened. For obtaining this result, I mount a pitched s inner 35, in front of the burner, in position to be struck only by the sprayed oil. This spinner is preferably mounted upon a screw or the like 36, extending forwardly from the valve 27. The' atomized or sprayed fuel strikes the pitched blades 37 of the spinner 35 and causes rapid rotationof the latter and hence, particles of oil are thrown olf by centrifugal force and the flame is effectively widened.

Excellent results are obtainable from the details disclosed and they therefore constitute the preferred form of my invention, but within the scope of this invention as claimed, numerous minor changes may be made.

1. In an oil burner, a burner body having fluid and oil ducts, a tubular upstanding fluid vsupp-ly neck supporting said burner body and having an oil port'detachably connected with said oil duct at the exterior of the neck, a drip pan having an opening in its bottom in which the lower end of said neck is secured, said pan being disposed under the detachable connection between said duct and port to receive all dripping oil `*when such connection is broken, a coupling secured against the lower side of the pan bottom for attaching ay fluid supply pipe in communication with said neck, the upper side of said coupling having a relatively wide and'shallow flat bottomed channel-way, and afluid controlling` valve plate slidable in said channel-way and slidably engaging the bottom of said pan.

2. A mechanically atomiz'ing oil burner comprising` a high pressure oil pipe having its tip formed with a narrow internal frustoconical valve seat, a valve adjustable towardl and from said seat, said valve being of substantially the same diameter as said tip and having a narrow frusto-conical face to c0- act with said seat in spraying a hollow conel of cil from the tip, and means for supplying.-

low pressure air to the sprayed cone comprisin a sleeve surrounding and widely space from said tip and valve, said sleeve terminating in rear of the zone of spray to supply air to the sprayed cone without obstructing the same.

3. The combination with an oil burner having mechanically atomi'ziing means for producing a hollow cone of sprayed fuel, in-

cluding a central, forwardl and rearwardly adjustable valve; of a spinner carried by said valve and spacedy forwardly from all arts of the burner in position to be struck y the fuels rayed fromv said atomizing means after e s ray leaves the burner, whereby to widen tlie zone of spra 4. A structure as specified in claim l; together with a spray-actuated spinner mounted at the front side of said valve and bodily movable with the latter, said spinner being spaced forwardly from all parts of the burner.

In testimony whereof I have hereunto ailixed my signature.

WILLIAM L. BAKER. 

